Berlin 2015 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 59: Oxide and Insulator Surfaces: Structure, Epitaxy and Growth
O 59.11: Vortrag
Mittwoch, 18. März 2015, 17:30–17:45, MA 042
Surface Adsorbates and Defects on the Subsurface Cation Vacancy Stabilized Surface of Magnetite (001) — •Eamon McDermott1, Roland Bliem2, Gareth Parkinson2, Ulrike Diebold2, and Peter Blaha1 — 1Institute for Material Chemistry, TU Wien, Vienna, Austria — 2Institute of Applied Physics, TU Wien, Vienna, Austria
Having proposed a new surface reconstruction for the magnetite (001) surface which is stabilized by a subsurface cation vacancy, we are now studying the extended properties of this reconstruction, including its preferred adsorption sites for various metals, the properties of oxygen vacancies at the structure and the adsorption of CO and OH groups. The surface structure has interesting chemistry, due to the presence of an oxygen site with a +1 oxidation state. In particular, we are interested in understanding our database of known magnetite surface defects as observed by STM. Progress on several ongoing investigations will be reported.